JP6319482B2 - Combine - Google Patents

Description

  The present invention relates to a combine provided with an exhaust emission control device.

  Conventionally, the structure which arrange | positions the exhaust gas purification apparatus which purifies the unburned fuel and granulated substance contained in exhaust gas in the space formed between a threshing apparatus and a glen tank is proposed (refer patent document 1).

JP 2011-135846 A

  The combine described in Patent Document 1 has an exhaust purification device for purifying unburned fuel and granulated substances inside an airtight cover, so that the exhaust device is excessively heated and is in the vicinity of the exhaust device. There was a risk that the installed detector would malfunction.

  Further, since the notch portion of the cover is provided on the side of the grain tank, there is a problem that safety during maintenance / inspection work performed with the grain tank opened is low.

  The present invention that has solved the above problems is as follows.

That is, the present invention includes a traveling device (3) below the fuselage (2), a threshing device (5) on the left and right sides of the fuselage (2), and grains on the left and right other sides of the fuselage (2). In a combine provided with a grain tank (6) for storing grains, and provided with an engine (9) in an engine room (E) provided on the front side of the grain tank (6), the exhaust gas in the exhaust gas of the engine (9) A urea selective catalytic reduction device (70) for purifying nitrogen oxides in exhaust gas after passing through the DPF unit (40) is disposed on the upper side of the DPF unit (40) for collecting and purifying fine particles, and the urea A cover (45) that covers the left and right sides of the selective catalyst reduction device (70) and the DPF unit (40) and opens the other side is provided, and the exhaust gas inlet of the DPF unit (40) is connected to the connecting pipe (50). The exhaust manifold of the engine (9) through The exhaust gas outlet of the DPF unit (40) is connected to the exhaust gas inlet of the urea selective catalyst reduction device (70) via the connecting pipe (73), and the urea selective catalyst A tail pipe (61) for discharging the purified exhaust gas to the outside of the apparatus is connected to the exhaust gas outlet of the reduction device (70), and the exhaust gas inlet of the DPF unit (40) is connected to the DPF unit (40 The exhaust gas outlet of the DPF unit (40) is arranged at the front side of the body of the DPF unit (40). is there.

  According to the present invention, nitrogen oxides in the exhaust gas are reacted by reacting nitrogen oxides in the exhaust gas discharged from the DPF unit (40) with ammonia in the urea water by the urea selective catalytic reduction device (70). Can be purified.

  And space can be used effectively by arrange | positioning the urea selective catalyst reduction apparatus (70) above an exhaust gas purification apparatus (40).

It is a right view of a combine. It is a left view of a combine. It is a top view of a combine. It is a rear view for the principal part description of reference embodiment. It is an expanded rear view for the principal part description of reference embodiment. It is a right view for the principal part description of reference embodiment. It is a right view for arrangement | positioning description of the DPF unit of a reference embodiment, and a red pepper. It is a top view for the principal part description of reference embodiment. It is a right view for the principal part description of embodiment. It is a right view of a tail pipe. It is a right view of the combine which removed the cabin. It is a right view of the combine of FIG. 12 which attached the sun visor. It is a top view of the combine of FIG. 12 which attached the sun visor. It is a front view for the principal part description of an engine room.

  Hereinafter, reference embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in order to make an understanding easy, although it showed and demonstrated the direction for convenience, the structure is not limited by these.

  As shown in FIGS. 1 to 3, the combine is composed of a traveling device 3 composed of a pair of left and right crawlers that travels across the field, a reaping device 4 that harvests cereals from the field at the front end position of the machine body 2, and cereals behind it. A threshing device 5 that performs threshing / selection of the threshing, and a Glen tank 6 that is juxtaposed on the right side of the threshing device 5 and stores the threshed / sorted grain, and faces the back of the reaping device 5 on the front side of the Glen tank 6. The part is provided with a cabin 7 having a pilot seat 7A on which a driver is seated.

  In addition, the rear side of the Glen tank 6 is provided with a discharge auger 8 for discharging stored grains to the outside of the machine, and an engine 9 is mounted in an engine room E on the lower rear side of the cabin 7.

<Threshing device>
The cereals harvested by the reaping device 4 are lifted and conveyed to the threshing device 5 and threshed and selected by the threshing device 5. The threshing apparatus 5 includes a handling chamber for threshing cereals at the upper part and a sorting room for selecting cereals at the lower part. As shown in FIG. 6, a handling cylinder having a plurality of teeth is supported on a handling cylinder shaft extending in the front-rear direction in the handling chamber. The first karakatsu (the karakomi in the claims) 11 that blows the air sucked from the air inlet 11A formed on the right side and the left side of the device 5 and the first receptacle that collects the grains leaking from the swing sorter樋 12, a second Karatsu (not shown) that blows air to the sheave at the rear of the swing sorting device, and a second receiving tray 13 that collects the grain with attached branch rafts leaking from the swing sorting device Are arranged in order from the front side.

  The grain recovered by the first receiving tray 12 is pumped to the glen tank 6 by the first cerealing device 14 disposed on the right side of the threshing device 5. The first cerealing device 14 is composed of a first cereal cylinder made of cylindrical steel and a first cerealing helix that feeds the grain, and the lower part of the first cerealing device 14 is on the right side of the threshing device 5. The upper part of the first cerealing device 14 communicates with the inlet of the glen tank 6 and communicates with the outlet formed in the lower part. Moreover, the 1st threshing apparatus 14 is arrange | positioned so that the space S1 pinched | interposed by the threshing apparatus 5 and the Glen tank 6 may go up from the lower part toward the upper part, and may incline forward.

  The cereal grains to which branch branches and the like collected by the second receiving tray 13 are attached are transferred to the second processing chamber by the second cerealing device 15 arranged on the right side of the threshing device 5. The second cerealing device 15 is composed of a second cereal cylinder made of a cylindrical steel material and a second cerealing helix that feeds the grain to which branch branch etc. are attached. The lower part of the second cerealing device 15 located in the rear communicates with a discharge port formed in the lower right side of the threshing device 5, and the upper part of the second cerealing device 15 communicates with the inlet of the second processing chamber. ing. Further, the second cerealing device 15 is disposed so as to incline forward from the lower part toward the upper part in the space S1 sandwiched between the threshing device 5 and the Glen tank 6.

  A second processing cylinder having intermittent spiral blades on the outer peripheral surface is installed in the second processing chamber for processing and reducing the grains to which branches and the like are attached. Kernels with branches and branches attached to the No. 2 processing chamber are conveyed forward by the rotating No. 2 processing cylinder, and the grains and branch rafts are separated. It falls into the device, joins the object to be processed from the handling room, and is re-sorted.

<Glentank>
The grain conveyed upward by the first cerealing device 14 is stored in the Glen tank 6. As shown in FIGS. 4 and 5, the Glen tank 6 includes a front wall and a rear wall arranged at intervals in the front-rear direction, a right wall and a left wall arranged at intervals in the left-right direction, a ceiling wall, Consists of bottom wall. At the upper part of the left wall, an inlet for inputting the grain is formed, and at the bottom of the glen tank 6, a discharge spiral for transferring the grain to the discharge auger 8 is provided.

  The right wall and the left wall of the grain tank 6 are formed by a vertical wall 22A extending vertically in the vertical direction in order to store a large amount of grain, and are formed between the threshing device 5 and the grain tank 6. In order to effectively utilize the space S1, the vertical wall 22A of the left wall has a first cerealing device 14 and a recess 22B in which the second cerealing device is disposed. The concave portion 22B is formed by a stepped portion having a different height in the longitudinal direction of the vertical wall 22A.

  The bottom wall of the Glen tank 6 is formed of an inclined wall 23A having an angle of repose from the right side to the left side so that the stored grains are efficiently discharged into the discharge spiral. The left side of the is formed by an inclined wall 23B having an angle of repose from the left side to the right side. The inclined wall 23B has a recess 23C in which the exhaust pipe 60 of the DPF unit 40 that is a diesel particulate filter is disposed. The concave portion 23C is formed by a stepped portion having a different height in the longitudinal direction of the inclined wall 23B.

  By disposing the exhaust pipe 60 of the DPF unit 40 in a high temperature state in the concave portion 23C of the inclined wall 23B, drying of the grain stored in the grain tank 6 is promoted, and the grain can be conveyed efficiently.

<Engine>
The engine 9 disposed in the engine room E below the cabin 7 is mounted on the airframe 2 via a vibration isolation mount in order to suppress vibration of the engine 9. As shown in FIG. 8, on the upper surface of the engine 9, a supercharger 30 having an intake turbine 30 </ b> A that supplies air to the engine 9 and an exhaust manifold 30 </ b> B that exhausts exhaust gas, and a part of the exhaust gas to the engine 9 are provided. An exhaust gas recirculation device (EGR) 31 to be mixed is provided side by side.

<DPF unit>
As shown in FIG. 6, in order to remove impurities contained in the exhaust gas discharged from the engine 9, the exhaust manifold 30 </ b> B of the engine 9 is connected to the DPF unit 40 (exhaust gas purification device in the claims) via a connecting pipe 50. ) Inlet is connected. The DPF unit 40 is composed of an oxidation catalyst (DOC) on the inlet side and a particulate filter (DPF) on the outlet side, and unburned fuel contained in the exhaust gas is oxidized by the DOC and contained in the exhaust gas. The granulated material is removed by the DPF. A pipe for supplying fuel to the engine 9 from a fuel tank disposed at the rear of the machine body 2 is disposed on the right side of the DPF unit 40.

  As shown in FIGS. 4 and 5, the DPF unit 40 is disposed below the inclined wall 23 </ b> B on the bottom wall of the Glen tank 6 in order to dry the grains stored in the Glen tank 6 by heat radiation from the DPF unit 40. Has been placed. As shown in FIG. 8, the outlet of the DPF unit 40 is located on the left side of the vertical wall 22 </ b> A of the left wall of the Glen tank 6.

  As shown in FIGS. 5 and 6, the DPF unit 40 is attached to the airframe 2 by a covering member 42 made of a steel material. The cover member 42 includes front and rear lower support members 43 and 43 and upper support members 44 and 44 that sandwich and support an intermediate portion in the front and rear direction of the DPF unit 40 from the upper and lower sides, and outer peripheral portions of the upper support members 44 and 44. The inner cover 45 is attached to the stay provided on the inner cover 45, and the heat shield 46 is attached to the stay provided on the outer periphery of the inner cover 45.

  Moreover, in order to suppress the temperature rise inside the covering member 42, the left side of the inner cover 45 of the covering member 42 that faces the air inlet 11 </ b> A of the first tang 11 of the threshing device 5 is opened to form an opening 42 </ b> A. Yes.

  As shown in FIG. 6, interference between the DPF unit 40 and the mounting arm 58 of the pitching cylinder (cylinder in the claims) 57 is prevented, and the DPF unit 40 is separated from the inclined wall 23B of the bottom wall of the Glen tank 6 by a predetermined distance. It is preferable to arrange a pitching cylinder 57 that adjusts the inclination angle in the front-rear direction of the traveling device 3 behind the DPF unit 40 in order to dispose it below. A base portion of the pitching cylinder 57 is rotatably attached to the machine body 2 below the second receiving rod 13 via a support member, and a tip end portion of the pitching cylinder 57 is extended to the first receiving rod 12 so that the pitching cylinder 57 An attachment arm 58 that connects the front end portion and the intermediate portion in the front-rear direction of the traveling device 3 is disposed behind the DPF unit 40. Thereby, it is not necessary to form the recess 23C in the inclined wall 23B of the bottom wall of the Glen tank 6, the Glen tank 6 can be manufactured at a low cost, and a large storage capacity can be secured.

  In order to facilitate maintenance / inspection work of the rolling cylinder 59 that opens the Glen tank 3 and adjusts the inclination angle in the left-right direction of the traveling device 3, as shown in FIG. Is arranged on the Glen tank 6 side and a rolling cylinder 59 is arranged.

  As shown in FIG. 5, the upper end portion of the lower support member 43 is formed in a substantially semicircular arc shape so as to support the outer peripheral portion of the DPF unit 40 whose longitudinal section is circular. In order to insert the drainage pipe 54 for discharging the water accumulated in the outside to the outside, a substantially square notch is opened in the middle part of the substantially semicircular arc in the left-right direction.

  Further, the lower portion of the lower support member 43 is formed with an extended portion extending to the right side of the fourth cover of the inner cover 45 and the third plate of the heat shield plate 46 in order to firmly support the DPF unit 40. Has been.

  A lower end portion of the upper support member 44 is formed in a substantially semicircular arc shape so as to sandwich the outer peripheral portion of the DPF unit 40 that is connected to the lower support member 43 and has a circular longitudinal cross-sectional shape. The outer peripheral portion of the member 44 is formed in a polygonal shape formed from five sides in order to facilitate the mounting of the bent inner cover 45. Counting counterclockwise, the first side is located from 8 o'clock to 10 o'clock, the second side is located from 10 o'clock to 11 o'clock, the third side is located from 11 o'clock to 1 o'clock, and the fourth side is 1 o'clock. The fifth side is located from 2 o'clock to 4 o'clock.

  Moreover, the lower side support member 43 and the upper side support member 44 are connected by the fastening member in both right and left ends.

  As shown in FIGS. 5 and 8, an inner cover 45 is attached to the outer periphery of the upper support member 44 in order to prevent ignition of dust and the like accumulated around the DPF unit 40 due to heat radiation from the DPF unit 40. Has been.

  The inner cover 45 is attached to a side cover 45A formed of four pieces that are bent, a front cover 45B attached to the front end of the side cover 45A, and a rear end of the side cover 45A. The rear cover 45C is provided.

  The side cover 45A is detachably attached to the outer periphery of the upper support member 44 by a fastening member via a stay. In order to heat the outside air sucked in by the first hot spring 11 by the heat radiation from the DPF unit 40, the first cover of the side cover 45A is located from 10 o'clock to 11 o'clock, and the second cover is It is located from 11:00 to 1 o'clock, the third cover is located from 1 o'clock to 2 o'clock, the fourth cover is located from 2 o'clock to 4 o'clock, and the terminal end of the fourth cover is the extension portion of the lower support member 43 It faces up. That is, the first cover of the side cover 45A is attached to the second side surface of the upper support member 44, the second cover of the side cover 45A is attached to the third side surface of the upper support member 44, and the side cover 45A. The third cover is attached to the fourth side surface of the upper support member 44, and the fourth cover of the side cover 45 </ b> A is attached to the fifth side surface of the upper support member 44. The side cover 45A is not provided at the outer peripheral portion of the unit 40 and is opened to form an opening 42A.

  A rear bent portion bent toward the rear side is formed at the outer peripheral end portion of the front cover 45B, and is detachably attached to the front end portion of the side cover 45A by fastening means. Further, a front bent portion that is bent toward the front side is formed at the outer peripheral end portion of the rear cover 45C, and is detachably attached to the rear end portion of the side cover 45A by fastening means.

  As shown in FIGS. 5 and 8, in order to prevent malfunction due to exposure of the sensor 47 disposed above the cover member 42 to high temperature outside air on the outer periphery of the side cover 45 </ b> A of the inner cover 45. Further, a heat shield plate 46 is attached.

  The heat shield plate 46 is detachably mounted on the outer peripheral portion of the side cover 45A by a fastening member via a stay. The heat shield plate 46 is formed from three pieces that are bent and counted counterclockwise, the first plate is located from 11 o'clock to 12 o'clock, and the second plate is located from 12 o'clock to 2 o'clock, The third plate is located from 2 o'clock to 4 o'clock, and the terminal portion of the third plate faces above the extending portion of the lower support member 43. That is, the first plate is inclined upward from the start end of the first plate located on the upper side of the first cover of the side cover 45A toward the right side and is located above the second cover of the side cover 45A. The second plate extends to the end portion of the plate, and the second plate is inclined to the right side from the start end portion which is also the end portion of the first plate and is located at the end portion of the third cover of the side cover 45A. The third plate extends downward from the start end portion which is also the end portion of the second plate, the end portion faces the extension portion of the lower support member 43, and the side portion. A space S2 defined by the second cover of the cover 45A and the first and second plates of the heat shield plate 46 is formed.

  As shown in FIG. 6, a sensor 47 that monitors the temperature and pressure state of the DPF unit 40 is disposed above the heat shield plate 46.

  The lower part of the bracket 48 having a substantially inverted U-shaped cross-sectional shape to which the sensor 47 is attached is attached to a stay to which the side cover 45A of the inner cover 45 is attached, and the third cover and the heat shield plate of the side cover 45A. A slit through which the bracket 48 is inserted is opened in the first plate 46.

  As shown in FIG. 6, the inflow port of the DPF unit 40 is connected to the exhaust manifold 30B via the connection pipe 50, and the exhaust gas from which impurities and the like are removed is discharged to the outflow port of the DPF unit 40. An exhaust pipe 60 is connected, and a drain pipe 54 is connected to the drain port of the DPF unit 40. In addition, the drain pipe 54 extends downward and inclined between a pair of left and right crawlers of the traveling device 3. Further, the connecting pipe 50 is inserted into the covering member 42 through a connecting hole opened in the covering member 42, and the exhaust pipe 60 reaches the outside of the covering member 42 through the lower side of the covering member 42.

  The connecting pipe 50 includes a first connecting pipe 51 made of a steel pipe, a flexible tube (connecting pipe in the claims) 52 made of a stainless steel pipe having flexibility for reducing propagation of vibration of the engine 9, and a second made of a steel pipe. A connection pipe 53 is provided.

  As shown in FIG. 10, the exhaust pipe 60 includes a tail pipe (exhaust pipe in the claims) 61 made of a steel pipe, and a cover 62 formed in a curved shape or a refractive shape that prevents rainwater or the like from entering the tail pipe 61. It is configured with.

  The tail pipe 61 extends from the inlet of the tail pipe 61 connected to the outlet of the DPF unit 40 toward the front upper side, and is detachably attached to the front side of the first cerealing device 14 via a stay. Yes. Further, the tail pipe 61 is provided with a tail pipe cover 61A surrounding the outer periphery thereof. The tail pipe cover 61A is connected to the outer peripheral surface of the tail pipe 61 by an attachment member such as a stay.

  In order to lower the temperature of the exhaust gas discharged into the tail pipe 61, it is preferable that the inner diameter of the intake port of the tail pipe 61 is larger than the outer diameter of the outlet port of the DPF unit 40. A predetermined gap is formed between the intake port of the tail pipe 61 and the outlet of the DPF unit 40, and a diffuser effect is generated by the flow of exhaust gas discharged from the DPF unit 40 to the tail pipe 61. The temperature of the exhaust gas discharged into the tail pipe 61 due to the outside air being sucked into the tail pipe 61 can be lowered. Further, rainwater or the like that has entered the tail pipe 61 from the opening 62C of the cover 62 can be drained out of the machine through the gap.

  The cover 62 includes an inner cover 62A connected to the exhaust port of the tail pipe 61 and an outer cover 62B that covers the inner cover 62A, and has a double structure.

  The inner cover 62A has a vertical cross-sectional shape formed in a semicircular arc shape, and an opening 62D is formed at the rear. Further, the inner cover 62A is connected to the outer peripheral surface of the upper end portion of the upper tail pipe 63B by a connecting member such as a bolt. The inner cover 62 </ b> A is formed to extend upward from the air inlet at the lower end and then bend toward the rear.

  The outer cover 62B that covers the outer side of the inner cover 62A has a vertical cross-sectional shape formed in a semicircular shape, and an opening 62C is formed at the rear of the outer cover 62B. The lower part of the outer cover 62B is formed in a cylindrical shape, and the lower part of the outer cover 62B is connected to the front part of the outer surface of the inner cover 62A and covers the upper part of the tail pipe cover 61A.

(Disposition position of DPF unit)
As shown in FIGS. 6 and 9, the DPF unit 40 supported by the covering member 42 is forward of the movable range of the mounting arm 58 of the pitching cylinder 57 between the rear surface of the engine 9 and the first cerealing device 14 in the front-rear direction. Is arranged. Further, the DPF unit 40 is biased to the front side of the grain tank 6 in order to promote drying of the grains stored in the grain tank 6.

  As shown in FIGS. 5 and 7, the DPF unit 40 is arranged at the center position of the fan of the first tang 11 and higher than the rolling pitching cylinder 58 in the vertical direction. Further, the upper portion of the DPF unit 40 is disposed at a position lower than the bottom wall of the Glen tank 6 in order to promote drying of the grains stored in the Glen tank 6.

  As shown in FIGS. 4 and 8, the DPF unit 40 is disposed between the threshing device 3 and the grain tank 6 in the left-right direction, and promotes drying of the grains stored in the grain tank 6. The upper right side of 40 faces the inclined wall 23B of the bottom wall of the Glen tank 6. Further, the center of the DPF unit 40 is biased to the grain tank 6 in order to promote drying of the grains stored in the grain tank 6.

(Embodiment)
As shown in FIG. 9, in the second embodiment, a urea SCR unit (urea selective catalytic reduction device in claims) 70 is mounted on the upper side of the DPF unit 40 and covered with a covering member 42. The urea SCR unit 70 purifies the nitrogen oxides in the exhaust gas by reacting nitrogen oxides in the exhaust gas discharged from the outlet of the DPF unit 40 with ammonia as a reducing agent derived from urea water. Is a unit. In addition, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  The DPF unit 40 is arranged with the DPF unit 40 described above upside down. That is, the inlet of the DPF unit 40 is located on the rear side, and the outlet of the DPF unit 40 is arranged on the front side.

  The DPF unit 40 is attached to the body 2 by a covering member 42. The cover member 42 includes front and rear lower support members 43 and 43 and upper support members 44 and 44 that sandwich and support an intermediate portion in the front and rear direction of the DPF unit 40 from the upper and lower sides, and outer peripheral portions of the upper support members 44 and 44. And an inner cover (cover) 45 attached to a stay provided on the inner wall. Note that the heat shield plate 46 can be mounted by providing a stay on the outer peripheral portion of the inner cover 45.

  Moreover, in order to suppress the temperature rise inside the covering member 42, the left side of the inner cover 45 of the covering member 42 facing the first tang 11 of the threshing device 5 is opened to form an opening 42A.

  The urea SCR unit 70 is detachably mounted on a bracket 72 that connects the upper ends of the two front and rear support members 71, 71. The support members 71 and 71 are attached to stays provided on the upper support members 44 and 44 to which the side cover 45A of the inner cover 45 is attached.

  In order to prevent interference between the DPF unit 40 and the mounting arm 58 of the pitching cylinder 57, it is preferable that the pitching cylinder 57 is disposed behind the DPF unit 40. A sensor 47 that monitors the temperature and pressure state of the DPF unit 40 is disposed above the engine 9 in the engine room E with the wiring extended.

  As shown in FIG. 9, the inlet of the DPF unit 40 is connected to the exhaust manifold 30 </ b> B of the engine 9 via the connection pipe 50, and the outlet of the DPF unit 40 is connected to the urea SCR unit 70 via the connection pipe 73. A drain pipe 54 is connected to the inflow port and to the drain port of the DPF unit 40. Further, an exhaust pipe 60 for discharging the exhaust gas from which impurities and the like are removed to the outside is connected to the outlet of the urea SCR unit 70. The connection pipe 50 is inserted into the cover member 42 through a connecting hole opened in the cover member 42, and the exhaust pipe 60 reaches the outside of the cover member 42 through the lower side of the cover member 42.

  As shown in FIG. 9, the tail pipe 61 of the exhaust pipe 60 extends from the inlet of the tail pipe 61 connected to the outlet of the urea SCR unit 70 toward the front upper side, and It is detachably attached to the front side via a stay.

  In order to lower the temperature of the exhaust gas discharged into the tail pipe 61, it is preferable to form the inner diameter of the intake port of the tail pipe 61 larger than the outer diameter of the outlet port of the urea SCR unit 70. A predetermined gap is formed between the intake port of the tail pipe 61 and the outlet port of the urea SCR unit 70, and a diffuser effect is generated by the flow of exhaust gas discharged from the urea SCR unit 70 to the tail pipe 61. It is possible to reduce the temperature of the exhaust gas exhausted into the tail pipe 61 by the outside air being sucked into the 61. Further, rainwater or the like that has entered the tail pipe 61 from the opening 62C of the cover 62 can be drained out of the machine through the gap. A double-structured cover 62 configured with an inner cover 62A and an outer cover 62B is attached to the exhaust port of the tail pipe 61.

  As shown in FIG. 9, the urea water tank 75 is disposed above the engine 9 in the engine room E in order to shorten the length of the connecting pipe that connects the urea water tank 75 containing the urea water and the urea SCR unit 70. Is preferred. However, in order to easily perform the urea water replenishment operation to the urea water tank 75, the urea water tank 75 can be disposed on one side in the left-right direction of the fuel tank disposed at the rear portion of the machine body 2.

  As shown in FIG. 11, an elastic plate 65 is stretched between the cockpit 7A and the front wall of the Glen tank 6 in order to prevent the heat radiation from the DPF unit 40 and the tail pipe 61 from propagating to the driver. It is preferable to do. Further, in order to prevent contact between the left wall of the grain tank 6 and the tail pipe 61 due to vibration generated by traveling of the traveling device 3, the tail pipe 61 is moved to the left of the grain tank 6 when the grain tank 6 is stored in the front-rear direction. It is suitable to arrange | position between the latching part 65 provided in the threshing apparatus 5 which latches a wall, and the 1st threshing apparatus 14. FIG.

  As shown in FIGS. 12 and 13, in order to prevent burns due to contact between the pilot and the tail pipe 61, the base of the left frame 67A that supports the sun visor 67 that prevents direct sunlight is connected to the center of the cockpit 7A. It is preferable to arrange on the imaginary line L that connects the center of the tail pipe 61. 13 and 14 illustrate the combine with the cabin 7 removed.

<Engine room>
As shown in FIG. 14, an engine room E is provided below the cabin 7.

  The engine cover 95 is provided with a filter body made of a hollow iron plate or the like. Inside the engine cover 95, an intercooler 93, an oil cooler 92, a radiator 91, a fan 90, and an engine 9 are arranged in this order from the outside.

  The intercooler 93 is a device that cools the air-fuel mixture for combustion in order to increase the combustion efficiency of the engine 9, and is mounted on a support member 96 provided outside the radiator 91. The exhaust port of the intercooler 93 is connected to the intake port of the engine 9 via a rubber hose 93A, and the support member 96 rotates in the left-right direction around a support shaft provided in the upper part of the support member 96 and extending in the front-rear direction. In order to prevent damage due to deformation of the rubber hose 93A that occurs when the supporting member 96 that moves is moved, it is preferable to provide a regulation guide 94 that regulates the deformation amount of the rubber hose 93A to a certain level or less.

  Moreover, it is also possible to use an aluminum pipe having high heat conduction efficiency instead of the rubber hose 93A, and it is more preferable to provide a radiation fin on the outer periphery of the aluminum pipe.

  The oil cooler 92 is a device that cools the elevating cylinder and the drive oil for the transmission, and is mounted on a support member 96 provided outside the radiator 91. A plurality of oil coolers 92 can be provided for each application.

  The radiator 91 is a device that cools the cooling water heated by the engine 9, and is connected to a manifold that is a cooling water path of the engine 9.

  The radiator 91 is disposed between the oil cooler 92 and the fan 90, an intercooler 93 and a support member for mounting the oil cooler 92 are provided on the outside of the radiator 91, and the intake of the fan 90 is placed on the inside of the radiator 91. A shroud surrounding the fan 90 is provided to increase efficiency.

  The shroud is preferably formed in a circular shape or a polygonal shape along the outer periphery of the fan 90, and is formed by using a thin plate-shaped steel plate in order to reduce the resistance to the intake of outside air by the fan 90.

  The fan 90 sucks outside air through the filter body of the engine cover 95 in the forward rotation driving state, cools the radiator 91 and the engine 9, and, in the reverse rotation driving state, the airframe through the filter body. This is an apparatus that exhausts the inside air inside and removes dust, dust, and the like attached to the filter body.

2 Airframe 3 Traveling device 5 Threshing device 6 Glen tank 9 Engine 30B Exhaust manifold 40 DPF unit 45 Inner cover (cover)
50 Connecting pipe 61 Tail pipe 62 Cover 70 Urea SCR unit (urea selective catalytic reduction device)
73 Connecting pipe E Engine room

Claims (1)

Glen tank that is provided with a traveling device (3) below the fuselage (2), a threshing device (5) on the left and right sides of the fuselage (2), and stores grains on the other left and right sides of the fuselage (2) (6), in a combine equipped with an engine (9) in an engine room (E) provided on the front side of the Glen tank (6), collecting particulates in the exhaust gas of the engine (9) A urea selective catalytic reduction device (70) for purifying nitrogen oxide in exhaust gas after passing through the DPF unit (40) is disposed above the DPF unit (40) to be purified, and the urea selective catalytic reduction device (70 ) And a cover (45) that covers one side of the DPF unit (40) and opens the other side of the DPF unit (40). The exhaust gas inlet of the DPF unit (40) is connected to the engine (9 through the connection pipe (50). To the exhaust manifold (30B) The exhaust gas outlet of the DPF unit (40) is connected to the exhaust gas inlet of the urea selective catalytic reduction device (70) via the connecting pipe (73), and the exhaust of the urea selective catalytic reduction device (70). A tail pipe (61) for discharging the exhaust gas after purification to the outside of the machine is connected to the gas outlet, and the exhaust gas inlet of the DPF unit (40) is connected to the rear side of the DPF unit (40). And the exhaust gas outlet of the DPF unit (40) is disposed at the front side of the DPF unit (40) .

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